One of my trailers is a 6x12 enclosed cargo trailer. The way I have it set up, it's 4000 lbs. No trailer brakes. Yes, yes, I can hear the finger-wagging.
My 2008 2500 hit 200k a while back, so I figured it was time to upgrade/replace the braking system - I got the Powerstop Z36 pad/rotor/caliper set for like $900. Remanufactured/repainted calipers, new slotted/drilled rotors, new carbon fiber/ceramic pads. Not a fan of drilled rotors, I've read they can be susceptible to cracking, but oh well.
I also replaced the master cylinder, power steering pump (hydro boost, not vacuum), and high-pressure lines.
The truck now brakes like new, maybe even better. No problem panic stopping with the trailer. Better pedal feel, and more linear. Completely satisfied.
PS - I would definitely look at either installing surge brakes on the trailer, or replacing it with one with brakes. I've always felt the half-ton SUVs were underbraked. I was not comfortable towing the 6x12 with my '01. The 2500 has 9900-lb brakes.